Claimable postgres

Claimable Postgres

When to Use

Use this skill when you need provision instant temporary Postgres databases via Claimable Postgres by Neon (neon.new) with no login, signup, or credit card. Supports REST API, CLI, and SDK. Use when users ask for a quick Postgres environment, a throwaway DATABASE_URL for prototyping/tests, or "just give me a DB...

Instant Postgres databases for local development, demos, prototyping, and test environments. No account required. Databases expire after 72 hours unless claimed to a Neon account.

Quick Start

curl -s -X POST "https://neon.new/api/v1/database" \
  -H "Content-Type: application/json" \
  -d '{"ref": "agent-skills"}'

Parse connection_string and claim_url from the JSON response. Write connection_string to the project's .env as DATABASE_URL.

For other methods (CLI, SDK, Vite plugin), see Which Method? below.

Which Method?

• REST API: Returns structured JSON. No runtime dependency beyond curl. Preferred when the agent needs predictable output and error handling.
• CLI (npx neon-new@latest --yes): Provisions and writes .env in one command. Convenient when Node.js is available and the user wants a simple setup.
• SDK (neon-new/sdk): Scripts or programmatic provisioning in Node.js.
• Vite plugin (vite-plugin-neon-new): Auto-provisions on vite dev if DATABASE_URL is missing. Use when the user has a Vite project.
• Browser: User cannot run CLI or API. Direct to https://neon.new.

REST API

Base URL: https://neon.new/api/v1

Create a database

curl -s -X POST "https://neon.new/api/v1/database" \
  -H "Content-Type: application/json" \
  -d '{"ref": "agent-skills"}'

Parameter	Required	Description
ref	Yes	Tracking tag that identifies who provisioned the database. Use "agent-skills" when provisioning through this skill.
enable_logical_replication	No	Enable logical replication (default: false, cannot be disabled once enabled)

The connection_string returned by the API is a pooled connection URL. For a direct (non-pooled) connection (e.g. Prisma migrations), remove -pooler from the hostname. The CLI writes both pooled and direct URLs automatically.

Response:

{
  "id": "019beb39-37fb-709d-87ac-7ad6198b89f7",
  "status": "UNCLAIMED",
  "neon_project_id": "gentle-scene-06438508",
  "connection_string": "postgresql://...",
  "claim_url": "https://neon.new/claim/019beb39-...",
  "expires_at": "2026-01-26T14:19:14.580Z",
  "created_at": "2026-01-23T14:19:14.580Z",
  "updated_at": "2026-01-23T14:19:14.580Z"
}

Check status

curl -s "https://neon.new/api/v1/database/{id}"

Returns the same response shape. Status transitions: UNCLAIMED -> CLAIMING -> CLAIMED. After the database is claimed, connection_string returns null.

Error responses

Condition	HTTP	Message
Missing or empty ref	400	Missing referrer
Invalid database ID	400	Database not found
Invalid JSON body	500	Failed to create the database.

CLI

npx neon-new@latest --yes

Provisions a database and writes the connection string to .env in one step. Always use @latest and --yes (skips interactive prompts that would stall the agent).

Pre-run Check

Check if DATABASE_URL (or the chosen key) already exists in the target .env. The CLI exits without provisioning if it finds the key.

If the key exists, offer the user three options:

1. Remove or comment out the existing line, then rerun.
2. Use --env to write to a different file (e.g. --env .env.local).
3. Use --key to write under a different variable name.

Get confirmation before proceeding.

Options

Option	Alias	Description	Default
--yes	-y	Skip prompts, use defaults	false
--env	-e	.env file path	./.env
--key	-k	Connection string env var key	DATABASE_URL
--prefix	-p	Prefix for generated public env vars